Moss stitch, or sometimes called seed stitch is a simple, textured knitting pattern. It is very beginner friendly, as it is made up of only knit and purl stitches. It consists of two rows/rounds that are repeated as often as you need them to.
Row 1: Knit 1, purl 1 - repeat until the end of the row.
Row 2: Purl 1, knit 1 - repeat until the end of the row.